Meet Our Team

Dan Simeroth

Dan started in the heating and air conditioning business in 1976 working for his brother’s company installing and servicing systems. In June of 1982, Dan received his California State Contractor’s License. Since 1982, Dan and his company has installed thousands of heating and air conditioning systems, mostly high quality Trane Equipment. Dan has received top customer service awards from Trane and Home Depot.

Dan grew up in Fullerton and graduated from Sunny Hills High School and attended Cal State University Fullerton and received a Bachelor’s Degree in Business. Dan made the High School All-American and NCAA All-American Team for Swimming. Dan continues to swim for exercise as well as competitions and is a U.S. Masters Swim Member. Dan is married to Debra and has two children, three step children, and three grandchildren.

Jon Pattynama

Jon is Dan’s Stepson and started working for Dan in 2004. Jon is Nate Certified and has received other certificates and awards as a Trane Comfort Specialist. Jon grew up in Lakewood, California and recently purchased his first home here in Rancho Cucamonga where he and his wife, Amaris, and daughter Zalea reside.

Robert Wachter

Bobby has been working with Dan in the HVAC industry since 1996, installing and servicing systems with high quality standards. He has since been made partner in the business. Bobby grew up in the Philadelphia area and moved to California in 1996. He lives in Riverside, California with his wife, Karen and his two daughters, Grace and Lily.

Why Do People Choose Sims Heating & Air?

As a licensed and NATE Certified (North American Technician Excellence) company, SIMS Heating & Air has proudly served Rancho Cucamonga, Upland, and Surrounding Areas for over 35 years. Our family-owned team team has been installing Trane Heating & Air Conditioning equipment since 1982.